Improvement in car-brake shoes



I: P. WENDELL.. GAR BRAKE SHOE,

No. 69,377. Patented ont. 1 1867.

PATENT OFFICE.

ISAAC P. WENDELLOF-PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN CAR-BRAKE SHOES.

Specification forming part ol Letters Patent No. 69,377, datedOctober'l, '1867.

To all whomV it may concern:

Be it known that I, Isaac P. WnNDnLL, of the city and county ot'Philadelphia, and State ot' Pennsylvania, have invented a new and usefulImprovement in BrakeShoes for Railroad-Cars; and I do hereby declarethat the following is a full and exact description thereof, referencebeing had to the accompanying drawings, and to the letters of referencemarked thereon.

My improvement, in the first place, consists in combining, rwith aeastiron brake-shoe, wood, vulcanized rubber', or other similarmaterial, to increase the binding capacity of the shoe; secondly, in apeculiar mode ot' connecting the shoe with its seat-stock, as will be undcrstood by the .following description.

Figure l is a face View of the improved shoe and parts inconnectiontherewith. Fig. 2 is au edge view of the same. Fig. 3 is a verticalsection of the same. Fig. et is a perspective view of the locking-boltE.

Like letters in all the figures indicate the same parts.

A- is a cast-iron shoe, having' its face acurved to lit the wheel.Through the face thereis a groove, in which I insert apiece of hardwood, B, with the end of the grain to the face. Projecting from thebottom of the groove is a stout pin or stud, l), which fits tight in thepiece B,

to prevent lateral movement ot' the latter, and to hold said piece rmlyagainst the bottom of the groove, to obviate the necessity of itsbinding hard upon the edges of the same, which would have the tendencyof sprn ging the shoe.

C C are pieces of india-rubber, which are inserted'in recesses c c inthe face of the shoe. Instead 4of india-rubber, other similar materialmay be used.

The fillings B and C C cause a suction, and consequently give increasedeffectiveness to the shoe. Their arrangement may be modiied asexperience may dictate, so as to have more or fewer pieces inserted inthe shoe 5 or they may'all be constructed of wood, or allot' rubber, asmay be found most advantageous.

Instead of running the piece B clear across the shoe, it may only lill amortise or recess, like those for the fillings C C.

Projecting from the back of the shoe A is a tongue, d, which lies in thecircular groove e of the seatstock D, in which it has a partial turn, toallow-ct' the rocking of the shoe, so as to accommodate its face to theface of the carwheel.

At each end of the tongue there is a journal, f. The journalshaveclampingcaps g g, which confine the tongue in the groove.

The shoe is also connected or locked to the seat by means of the keyboltE, which passes through the cheeks h h., which forni the groove c, andthrough the tongue f. The said bolt.

keeps the shoe tirmly in its longitudinal position and takes the mainstrain ott" the caps g g.

Although the'round form of the bolt is the most suitable,'y et it willanswer in any other form by having the cross grooves or openings tocorrespond.

The key has a lug, i, whichis passed through the groove j, and the keyis then turned partly around untilthe arm lc rests against the lug l onthe side of the seat-stock D. The weight of the arm prevents the keyturning back by any motion of the car, and consequently there is nodanger of the shoe being disconnected from the seat-stock.

The stock is hung to the stirrups ofthe truck by means of a similarbolt, E. I

Having thus described my invention, what I claim therein as new, anddesire to secure by Letters Patent, is-

1. The combination, with a cast-iron brake shoe for railroadcars, ofpieces of wood, lindia-rubber, or other suitable material softer than.the iron, substantially in the manner hereinbeforedescribed, and forthe purpose above specified.

2.V The combination of the shoe A and stock D, by means of the groove e,tongue f, and cross-key E, substantially in the manner described, andfor the purpose set forth.

3. The combination of thelugiand arm kwith the keys E and E',substantially as described, and for the purpose specified.

In testimony that the above is my'invention I have hereunto set my handand affixed my seal this 19th day of December, 1866.

ISAAC P. WENDELL.

